Modern welfare state development is generally considered to lead to social security or benefits payments, social housing provision, health provision, social work and educational services.
Together these services are known as the 'big five ' but these services tend to develop over time and have differed in quantity, availability and quality. Provision and development can change due to social, economic and political factors (Spicker, 1995, p. 3). State provision of welfare has a long history, in Britain for instance dating back to the Elizabethan Poor Laws and earlier. Welfare states started to develop when surveys of poverty by people such as Charles Booth showed the inadequacy of welfare provisions that could not deal with poverty particularly with increasing urbanisation and industrialisation (Thane, 1996, p. 7). The worldwide depression from 1929 would lead countries to consider further welfare developments. High unemployment (12% of the working population in Britain at its worst) showed that better welfare provision was needed (Robbins, 1994, p. 208). From such modest roots the public sector in Britain for example represents around 40 % of the economy (Simpson, 2005, p. 4). There are various key theories that seek to explain the processes involved in welfare state development that will be explained below. The theories have evolved or being devised to explain the differences and similarities in welfare state development in different countries at the same time or in a single country over a period of time. Theories agree that welfare states were developed to serve those that needed help the most or sometimes as universal services to all (O 'Brien and Penna, 1998, p. 2). After the main theories have been discussed the one or ones that are most applicable for evaluating contemporary changes will be outlined.
There are different ways of looking at the development of the welfare state and deciding how far it should extend,